package com.zyx.nettypro.netty.websocket;

import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.handler.codec.http.websocketx.TextWebSocketFrame;

import java.time.LocalDateTime;

/**
 * @author Yaxi.Zhang
 * @since 2021/9/23 14:20
 * desc: 这里 TextWebSocketFrame 类型, 表示一个文本帧(frame)
 */
public class MyTextWebSocketFrameHandler extends SimpleChannelInboundHandler<TextWebSocketFrame> {

    @Override
    protected void channelRead0(ChannelHandlerContext ctx, TextWebSocketFrame msg) throws Exception {
        System.out.println("服务器收到消息:" + msg.text());
        // 发送消息
        ctx.channel().writeAndFlush(new TextWebSocketFrame("服务器时间:" + LocalDateTime.now() + "," + msg.text()));
    }

    @Override
    public void handlerAdded(ChannelHandlerContext ctx) throws Exception {
        System.out.println("handlerAdded被调用 " + ctx.channel().id().asLongText());
        System.out.println("handlerAdded被调用 " + ctx.channel().id().asShortText());
    }

    @Override
    public void handlerRemoved(ChannelHandlerContext ctx) throws Exception {
        System.out.println("handlerRemoved被调用 " + ctx.channel().id().asLongText());
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        System.out.println("发生异常 =====>>>>> " + cause.getMessage());
        ctx.close();
    }
}
